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Round|Natural|GIA

1.60ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5563221625

Certificate GIA 5563221625

Diamond specifications and retailer prices

From £3,735 GBP
HK$39,100 HKD
As of November 1, 2026
Save £4,668 GBP (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £8,403 GBP at NZ Jewellers · As of October 30, 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 5563221625. Listed at 19 retailers as of October 30, 2026, with prices from £3,735 to £8,403, a £4,668 spread on the same certified stone. NZ Jewellers lists it at £8,403. 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
FluorescenceStrong
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5563221625
Dimensions7.39 × 7.43 × 4.65 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural
Top View
7.39 mm7.43 mm1.60 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5563221625
Side View
Table 57.0%Crown 35.5°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
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: Nov 1
Current: £7,402 GBP|Low: £3,735 GBP|High: £7,491 GBP|Avg: £5,269 GBP|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 8£3,735 GBP
Retailer 10£4,194 GBP
Retailer 4£4,375 GBP
Retailer 11£4,638 GBP
Retailer 5£4,661 GBP
Retailer 6£4,787 GBP
Retailer 12£4,927 GBP
Retailer 3£5,101 GBP
Retailer 13£5,209 GBP
Retailer 9£5,490 GBP
Retailer 2£5,635 GBP
Retailer 7£6,173 GBP
Retailer 1£7,402 GBP

43 data points across 13 retailers

19 retailers£3,735 GBP to £8,403 GBP

A
Cheapest Retailer
-
£3,735 GBP
HK$39,100 HKD
Retailer 2
-
£4,194 GBP
$5,620 USD
View
Price last confirmed 7 days ago
Retailer 3
-
£4,255 GBP
SGD 7,704 SGD
View
Price last confirmed 18 days ago
B+
Retailer 4
-
£4,375 GBP
$5,862 USD
View
B+
Retailer 5
-
£4,382 GBP
$5,871 USD
View
B+
Retailer 6
-
£4,638 GBP
$6,214 USD
View
B+
Retailer 7
-
£4,638 GBP
$6,214 USD
View
Final sale: no returns
B+
Retailer 8
-
£4,661 GBP
$6,245 USD
View
B+
Retailer 9
-
£4,787 GBP
View
Retailer 10
-
£4,927 GBP
A$10,156 AUD
View
Price last confirmed 28 days ago
B+
Retailer 11
-
£5,024 GBP
$6,732 USD
View
B+
Retailer 12
-
£5,101 GBP
$6,835 USD
View
B+
Retailer 13
-
£5,209 GBP
$6,979 USD
View
B+
Retailer 14
-
£5,490 GBP
€7,006 EUR
View
Retailer 15
-
£5,635 GBP
View
Price last confirmed 32 days ago
B
Retailer 16
-
£5,797 GBP
$7,767 USD
View
B+
Retailer 17
-
£6,173 GBP
ZAR 133,614 ZAR
View
B
Retailer 18
-
£7,402 GBP
View
Most Expensive
B
NZ Jewellers
9ca6b0b3-01fb-47ce-8466-0ab880ee7667 · Oct 30
£8,403 GBP
$11,259 USD
View
18 more retailers have this diamond
Prices start from £3,735 GBPSave up to £4,668 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
£3,735 GBP