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Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2245018446

Certificate GIA 2245018446

Diamond specifications and retailer prices

From £2,497 GBP
SGD 4,521 SGD
As of October 31, 2026
Save £2,012 GBP (45%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,508 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2245018446. Listed at 9 retailers as of October 26, 2026, with prices from £2,497 to £4,508, a £2,012 spread on the same certified stone. Wholesale Diamonds Direct lists it at £4,508. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2245018446
Dimensions7.27 × 4.58 × 4.58 mm
L/W Ratio1.59
Culet sizeNone
Top View
7.27 mm4.58 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245018446
Side View
Table 58.0%Crown 36°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 62.7%

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: £3,263 GBP|Low: £2,497 GBP|High: £4,818 GBP|Avg: £3,248 GBP|-2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Wholesale Diamonds Direct
November 1, 2026
Retailer 5£2,497 GBP
Retailer 3£2,620 GBP
Retailer 7£2,676 GBP
Retailer 2£2,839 GBP
Retailer 6£3,164 GBP
Retailer 1£3,263 GBP
Retailer 4£3,332 GBP
Wholesale Diamonds Direct£4,508 GBP

45 data points across 8 retailers

9 retailers£2,497 GBP to £4,508 GBP

A
Cheapest Retailer
-
£2,497 GBP
SGD 4,521 SGD
A
Retailer 2
-
£2,620 GBP
$3,510 USD
View
A
Retailer 3
-
£2,676 GBP
SGD 4,846 SGD
View
A
Retailer 4
-
£2,839 GBP
View
A
Retailer 5
-
£3,164 GBP
$4,239 USD
View
A
Retailer 6
-
£3,263 GBP
€4,164 EUR
View
A
Retailer 7
-
£3,332 GBP
View
B+
Retailer 8
-
£4,249 GBP
$5,693 USD
View
Most Expensive
B+
Wholesale Diamonds Direct
472895024 · Oct 26
£4,508 GBP
$6,041 USD
View
8 more retailers have this diamond
Prices start from £2,497 GBPSave up to £2,012 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
£2,497 GBP