Round|Natural|GIA

1.60ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5543859833

Certificate GIA 5543859833

Diamond specifications and retailer prices

From £4,624 GBP
$6,195 USD
As of October 25, 2026
Save £4,119 GBP (47%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £10,478 GBP at NZ Jewellers · As of October 23, 2026
View at NZ Jewellers

About this 1.6ct natural round diamond

This 1.6ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5543859833. Listed at 24 retailers as of October 25, 2026, with a 89% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.60
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5543859833
Dimensions7.48 × 7.43 × 4.65 mm
L/W Ratio1.01
Star length55%
Top View
7.48 mm7.43 mm1.60 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5543859833
Side View
Table 56.0%Crown 35.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: £10,478 GBP|Low: £4,624 GBP|High: £10,478 GBP|Avg: £6,184 GBP|+3.7%
NZ Jewellers
Retailer 2
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Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
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Retailer 19
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Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
October 30, 2026
Retailer 21£4,624 GBP
Retailer 7£4,735 GBP
Retailer 6£4,738 GBP
Retailer 10£4,950 GBP
Retailer 8£5,027 GBP
Retailer 4£5,239 GBP
Retailer 11£5,239 GBP
Retailer 23£5,239 GBP
Retailer 17£5,359 GBP
Retailer 14£5,573 GBP
Retailer 9£5,580 GBP
Retailer 25£5,676 GBP
Retailer 24£5,763 GBP
Retailer 15£5,771 GBP
Retailer 19£5,839 GBP
Retailer 18£5,874 GBP
Retailer 3£6,009 GBP
Retailer 16£6,216 GBP
Retailer 12£6,310 GBP
Retailer 5£6,549 GBP
Retailer 2£6,723 GBP
Retailer 20£6,951 GBP
Retailer 13£7,628 GBP
Retailer 22£8,743 GBP
NZ Jewellers£10,478 GBP

27 data points across 25 retailers

24 retailers£4,624 GBP to £8,743 GBP

A
Cheapest Retailer
-
£4,624 GBP
$6,195 USD
B+
Retailer 2
-
£4,735 GBP
$6,345 USD
View
B+
Retailer 3
-
£4,738 GBP
$6,349 USD
View
B+
Retailer 4
-
£4,875 GBP
A$10,048 AUD
View
B+
Retailer 5
-
£4,950 GBP
$6,633 USD
View
Retailer 6
-
£5,027 GBP
$6,736 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
£5,239 GBP
$7,020 USD
View
B+
Retailer 8
-
£5,239 GBP
$7,020 USD
View
B+
Retailer 9
-
£5,359 GBP
CA$9,972 CAD
View
B+
Retailer 10
-
£5,573 GBP
$7,467 USD
View
B+
Retailer 11
-
£5,580 GBP
$7,476 USD
View
B+
Retailer 12
-
£5,676 GBP
$7,605 USD
View
B+
Retailer 13
-
£5,763 GBP
$7,722 USD
View
Retailer 14
-
£5,771 GBP
$7,732 USD
View
Price last confirmed 16 days ago
B+
Retailer 15
-
£5,839 GBP
View
Retailer 16
-
£6,009 GBP
A$12,386 AUD
View
Price last confirmed 9 days ago
B+
Retailer 17
-
£6,216 GBP
$8,329 USD
View
B+
Retailer 18
-
£6,310 GBP
$8,454 USD
View
Retailer 19
-
£6,549 GBP
$8,775 USD
View
Price last confirmed 8 days ago
B
Retailer 20
-
£6,723 GBP
€8,579 EUR
View
B
Retailer 21
-
£6,951 GBP
View
B
Retailer 22
-
£7,628 GBP
ZAR 165,124 ZAR
View
B
Retailer 23
-
£8,743 GBP
View
Most Expensive
NZ Jewellers
8a0dd72c-eb0a-4ca9-b445-cac87d0ed789 · Oct 23
£10,478 GBP
$14,040 USD
View
Price last confirmed 8 days ago
23 more retailers have this diamond
Prices start from £4,624 GBPSave up to £4,119 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.60ct Round
£4,624 GBP