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Round|Natural|GIA

1.51ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 2556718809

Certificate GIA 2556718809

Diamond specifications and retailer prices

From £3,974 GBP
HK$41,600 HKD
As of October 30, 2026
Save £3,859 GBP (49%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £7,833 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556718809. Listed at 10 retailers as of October 26, 2026, with prices from £3,974 to £7,833, a £3,859 spread on the same certified stone. Wholesale Diamonds Direct lists it at £7,833. 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556718809
Dimensions7.29 × 7.33 × 4.58 mm
L/W Ratio1.01
Top View
7.29 mm7.33 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556718809
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: 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 30
Current: £5,584 GBP|Low: £3,974 GBP|High: £8,097 GBP|Avg: £5,030 GBP|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
October 30, 2026
Retailer 6£3,974 GBP
Retailer 3£4,103 GBP
Retailer 8£4,310 GBP
Retailer 5£4,603 GBP
Retailer 9£4,628 GBP
Retailer 2£4,766 GBP
Retailer 7£4,785 GBP
Retailer 4£5,562 GBP
Retailer 1£5,584 GBP
Wholesale Diamonds Direct£7,833 GBP

29 data points across 10 retailers

10 retailers£3,974 GBP to £7,833 GBP

A
Cheapest Retailer
-
£3,974 GBP
HK$41,600 HKD
A
Retailer 2
-
£4,103 GBP
₹523,552 INR
View
A
Retailer 3
-
£4,310 GBP
$5,775 USD
View
Final sale: no returns
A
Retailer 4
-
£4,603 GBP
SGD 8,334 SGD
View
Retailer 5
-
£4,628 GBP
SGD 8,380 SGD
View
Price last confirmed 15 days ago
A
Retailer 6
-
£4,766 GBP
$6,386 USD
View
A
Retailer 7
-
£4,785 GBP
$6,412 USD
View
A
Retailer 8
-
£5,562 GBP
View
A
Retailer 9
-
£5,584 GBP
€7,126 EUR
View
Most Expensive
B
Wholesale Diamonds Direct
436402900 · Oct 26
£7,833 GBP
$10,496 USD
View
9 more retailers have this diamond
Prices start from £3,974 GBPSave up to £3,859 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
£3,974 GBP