Round|Natural|GIA

1.70ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6545357664

Certificate GIA 6545357664

Diamond specifications and retailer prices

From £5,073 GBP
$6,797 USD
As of October 30, 2026
Save £5,762 GBP (53%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £10,834 GBP at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.7ct natural round diamond

This 1.7ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6545357664. Listed at 25 retailers as of October 30, 2026, with a 114% 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

1.70
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6545357664
Dimensions7.62 × 7.57 × 4.74 mm
L/W Ratio1.01
Top View
7.62 mm7.57 mm1.70 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545357664
Side View
Table 55.0%Crown 34°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £7,824 GBP|Low: £4,965 GBP|High: £9,545 GBP|Avg: £7,188 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 8£5,073 GBP
Retailer 7£5,417 GBP
Retailer 6£5,418 GBP
Retailer 3£5,995 GBP
Retailer 4£7,047 GBP
Retailer 1£7,824 GBP
Retailer 2£9,028 GBP
Retailer 5£9,502 GBP

39 data points across 8 retailers

25 retailers£5,073 GBP to £10,834 GBP

B+
Cheapest Retailer
-
£5,073 GBP
$6,797 USD
B+
Retailer 2
-
£5,417 GBP
$7,258 USD
View
Final sale: no returns
B+
Retailer 3
-
£5,418 GBP
$7,259 USD
View
B+
Retailer 4
-
£5,771 GBP
$7,732 USD
View
Retailer 5
-
£5,869 GBP
$7,864 USD
View
Price last confirmed 24 days ago
Retailer 6
-
£5,869 GBP
$7,864 USD
View
Price last confirmed 44 days ago
Retailer 7
-
£5,869 GBP
$7,864 USD
View
Price last confirmed 10 days ago
Retailer 8
-
£5,959 GBP
$7,985 USD
View
Price last confirmed 32 days ago
B+
Retailer 9
-
£5,995 GBP
View
B
Retailer 10
-
£6,224 GBP
$8,340 USD
View
B
Retailer 11
-
£6,224 GBP
$8,340 USD
View
B+
Retailer 12
-
£6,426 GBP
$8,610 USD
View
Retailer 13
-
£6,771 GBP
$9,073 USD
View
Price last confirmed 23 days ago
Retailer 14
-
£6,771 GBP
$9,073 USD
View
Price last confirmed 40 days ago
Retailer 15
-
£6,771 GBP
$9,073 USD
View
Price last confirmed 11 days ago
B
Retailer 16
-
£6,771 GBP
$9,073 USD
View
B+
Retailer 17
-
£7,047 GBP
€8,993 EUR
View
Retailer 18
-
£7,135 GBP
$9,560 USD
View
Price last confirmed 17 days ago
B
Retailer 19
-
£7,824 GBP
View
B
Retailer 20
-
£9,028 GBP
View
B
Retailer 21
-
£9,502 GBP
View
Retailer 22
-
£10,834 GBP
$14,517 USD
View
Price last confirmed 42 days ago
B
Retailer 23
-
£10,834 GBP
$14,517 USD
View
Retailer 24
-
£10,834 GBP
$14,517 USD
View
Price last confirmed 35 days ago
Most Expensive
NZ Jewellers
9dce53ff-da98-468c-a682-945f5f03bd09 · Oct 20
£10,834 GBP
$14,517 USD
View
Price last confirmed 11 days ago
24 more retailers have this diamond
Prices start from £5,073 GBPSave up to £5,762 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.

B+
1.70ct Round
£5,073 GBP