CaratHunter
Plans
Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 7551878141

Certificate GIA 7551878141

Diamond specifications and retailer prices

From £3,335 GBP
$4,468 USD
As of October 24, 2026
Save £906 GBP (21%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £6,045 GBP at Wholesale Diamonds Direct · As of October 23, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural oval diamond

This 1.51ct natural oval 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 stated by the retailer rather than the lab and certified by GIA 7551878141. Listed at 11 retailers as of October 24, 2026, with a 27% 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

1.51
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle39.34°
Pavilion angle39.99°
OriginNatural
Grading LabGIA
CertificateGIA 7551878141
Dimensions8.91 × 6.40 × 4.02 mm
L/W Ratio1.39
Culet sizeNone
Top View
8.91 mm6.40 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7551878141
Side View
Table 58.0%Crown 39.34°Girdle: STK-THKPavilion 39.99°Culet: NoneDepth 62.9%

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 24
Current: £4,241 GBP|Low: £3,335 GBP|High: £6,588 GBP|Avg: £4,361 GBP|-5.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
October 24, 2026
Retailer 2£3,335 GBP
Retailer 4£3,356 GBP
Retailer 5£3,411 GBP
Retailer 3£3,489 GBP
Retailer 10£3,597 GBP
Retailer 7£3,704 GBP
Retailer 6£4,134 GBP
Retailer 8£4,136 GBP
Retailer 1£4,241 GBP
Retailer 9£5,685 GBP
Wholesale Diamonds Direct£6,045 GBP

37 data points across 11 retailers

11 retailers£3,335 GBP to £4,241 GBP

A
Cheapest Retailer
-
£3,335 GBP
$4,468 USD
A
Retailer 2
-
£3,356 GBP
SGD 6,076 SGD
View
A
Retailer 3
-
£3,411 GBP
$4,570 USD
View
A
Retailer 4
-
£3,489 GBP
$4,675 USD
View
A
Retailer 5
-
£3,597 GBP
SGD 6,513 SGD
View
A
Retailer 6
-
£3,704 GBP
View
A
Retailer 7
-
£4,134 GBP
$5,539 USD
View
A
Retailer 8
-
£4,136 GBP
$5,542 USD
View
A
Retailer 9
-
£4,241 GBP
€5,412 EUR
View
Retailer 10
-
£5,685 GBP
$7,617 USD
View
Price last confirmed 8 days ago
Most Expensive
Wholesale Diamonds Direct
465835342 · Oct 23
£6,045 GBP
$8,099 USD
View
Price last confirmed 7 days ago
10 more retailers have this diamond
Prices start from £3,335 GBPSave up to £906 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 Oval
£3,335 GBP