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1.71ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6512800435

Certificate GIA 6512800435

Diamond specifications and retailer prices

From £5,798 GBP
$7,769 USD
As of October 30, 2026
Save £6,588 GBP (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £12,386 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.71ct natural round diamond

This 1.71ct 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 6512800435. Listed at 15 retailers as of October 30, 2026, with prices from £5,798 to £12,386, a £6,588 spread on the same certified stone. NZ Jewellers lists it at £12,386. 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

1.71
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6512800435
Dimensions7.65 × 7.61 × 4.73 mm
L/W Ratio1.01
Star length50%
Top View
7.65 mm7.61 mm1.71 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6512800435
Side View
Table 58.0%Crown 35.5°Girdle: Sli. ThickPavilion 41.2°Culet: NoneDepth 62.1%

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: £6,871 GBP|Low: £5,161 GBP|High: £10,445 GBP|Avg: £7,898 GBP|+0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 5£6,193 GBP
Retailer 1£6,871 GBP
Retailer 3£7,720 GBP
Retailer 2£8,971 GBP
Retailer 4£10,376 GBP

44 data points across 5 retailers

15 retailers£5,798 GBP to £12,386 GBP

B+
Cheapest Retailer
-
£5,798 GBP
$7,769 USD
B+
Retailer 2
-
£6,193 GBP
$8,298 USD
View
B+
Retailer 3
-
£6,193 GBP
$8,298 USD
View
Final sale: no returns
B+
Retailer 4
-
£6,709 GBP
$8,989 USD
View
B
Retailer 5
-
£6,813 GBP
$9,128 USD
View
B+
Retailer 6
-
£6,871 GBP
View
B
Retailer 7
-
£7,329 GBP
$9,820 USD
View
B
Retailer 8
-
£7,329 GBP
$9,820 USD
View
B
Retailer 9
-
£7,575 GBP
$10,150 USD
View
B
Retailer 10
-
£7,720 GBP
€9,852 EUR
View
B
Retailer 11
-
£7,741 GBP
$10,372 USD
View
Retailer 12
-
£8,152 GBP
$10,923 USD
View
Price last confirmed 8 days ago
B
Retailer 13
-
£8,971 GBP
View
B
Retailer 14
-
£10,376 GBP
View
Most Expensive
B
NZ Jewellers
f8d76609-5931-49d4-8cc3-e4efb57bc0eb · Oct 30
£12,386 GBP
$16,596 USD
View
14 more retailers have this diamond
Prices start from £5,798 GBPSave up to £6,588 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+
1.71ct Round
£5,798 GBP