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Marquise|Natural|GIA

1.51ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 6551370864

Certificate GIA 6551370864

Diamond specifications and retailer prices

From £2,304 GBP
SGD 4,178 SGD
As of October 31, 2026
Save £2,449 GBP (52%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,753 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551370864. Listed at 10 retailers as of October 27, 2026, with prices from £2,304 to £4,753, a £2,449 spread on the same certified stone. Wholesale Diamonds Direct lists it at £4,753. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.06°
Pavilion angle38.76°
OriginNatural
Grading LabGIA
CertificateGIA 6551370864
Dimensions11.46 × 6.06 × 3.69 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.46 mm6.06 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551370864
Side View
Table 58.0%Crown 38.06°Girdle: MED-THKPavilion 38.76°Culet: NoneDepth 61.0%

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: £3,378 GBP|Low: £2,304 GBP|High: £5,337 GBP|Avg: £3,393 GBP|-13.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 2, 2026
Retailer 6£2,304 GBP
Retailer 3£2,314 GBP
Retailer 4£2,616 GBP
Retailer 10£2,753 GBP
Retailer 5£2,794 GBP
Retailer 9£2,855 GBP
Retailer 7£3,321 GBP
Retailer 8£3,353 GBP
Retailer 1£3,378 GBP
Retailer 2£3,584 GBP
Retailer 11£4,503 GBP
Wholesale Diamonds Direct£4,753 GBP

30 data points across 12 retailers

10 retailers£2,304 GBP to £4,753 GBP

A
Cheapest Retailer
-
£2,304 GBP
SGD 4,178 SGD
A
Retailer 2
-
£2,616 GBP
$3,510 USD
View
A
Retailer 3
-
£2,753 GBP
$3,694 USD
View
A
Retailer 4
-
£2,794 GBP
$3,750 USD
View
A
Retailer 5
-
£2,855 GBP
SGD 5,178 SGD
View
A
Retailer 6
-
£3,321 GBP
$4,456 USD
View
A
Retailer 7
-
£3,353 GBP
$4,499 USD
View
A
Retailer 8
-
£3,378 GBP
€4,317 EUR
View
B+
Retailer 9
-
£3,584 GBP
$4,810 USD
View
Most Expensive
B+
Wholesale Diamonds Direct
262936432 · Oct 27
£4,753 GBP
$6,379 USD
View
9 more retailers have this diamond
Prices start from £2,304 GBPSave up to £2,449 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 Marquise
£2,304 GBP