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1.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6565171682

Certificate GIA 6565171682

Diamond specifications and retailer prices

From £2,726 GBP
SGD 4,936 SGD
As of October 31, 2026
Save £2,925 GBP (52%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £5,651 GBP at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565171682. Listed at 7 retailers as of October 26, 2026, with prices from £2,726 to £5,651, a £2,925 spread on the same certified stone. Wholesale Diamonds Direct lists it at £5,651. 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

1.51
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6565171682
Dimensions7.30 × 4.58 × 4.58 mm
L/W Ratio1.59
Culet sizeNone
Top View
7.30 mm4.58 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565171682
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.6%

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: Oct 31
Current: £4,047 GBP|Low: £2,726 GBP|High: £6,642 GBP|Avg: £4,217 GBP|-12.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Wholesale Diamonds Direct
October 30, 2026
Retailer 4£2,726 GBP
Retailer 3£3,279 GBP
Retailer 6£3,380 GBP
Retailer 5£3,907 GBP
Retailer 2£4,014 GBP
Retailer 1£4,047 GBP
Wholesale Diamonds Direct£5,651 GBP

36 data points across 7 retailers

7 retailers£2,726 GBP to £5,651 GBP

A
Cheapest Retailer
-
£2,726 GBP
SGD 4,936 SGD
A
Retailer 2
-
£3,279 GBP
$4,393 USD
View
A
Retailer 3
-
£3,380 GBP
SGD 6,120 SGD
View
A
Retailer 4
-
£3,907 GBP
$5,235 USD
View
A
Retailer 5
-
£4,014 GBP
€5,122 EUR
View
A
Retailer 6
-
£4,047 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
378293572 · Oct 26
£5,651 GBP
$7,572 USD
View
6 more retailers have this diamond
Prices start from £2,726 GBPSave up to £2,925 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
1.51ct Round
£2,726 GBP