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Marquise|Natural|GIA

1.51ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 2566364425

Certificate GIA 2566364425

Diamond specifications and retailer prices

From £4,949 GBP
₹632,523 INR
As of November 2, 2026
Save £6,071 GBP (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £11,021 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566364425. Listed at 21 retailers as of October 30, 2026, with prices from £4,949 to £11,021, a £6,071 spread on the same certified stone. NZ Jewellers lists it at £11,021. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2566364425
Dimensions11.56 × 6.06 × 3.74 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
11.56 mm6.06 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2566364425
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £11,021 GBP|Low: £4,949 GBP|High: £11,196 GBP|Avg: £6,525 GBP|-1.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 16£4,949 GBP
Retailer 20£5,092 GBP
Retailer 9£5,272 GBP
Retailer 13£5,531 GBP
Retailer 11£5,695 GBP
Retailer 19£5,777 GBP
Retailer 18£6,006 GBP
Retailer 10£6,073 GBP
Retailer 6£6,082 GBP
Retailer 3£6,093 GBP
Retailer 14£6,349 GBP
Retailer 5£6,359 GBP
Retailer 12£6,442 GBP
Retailer 21£6,552 GBP
Retailer 7£6,589 GBP
Retailer 2£6,637 GBP
Retailer 4£6,733 GBP
Retailer 17£6,768 GBP
Retailer 15£7,542 GBP
Retailer 8£9,232 GBP
NZ Jewellers£11,021 GBP

12 data points across 21 retailers

21 retailers£4,949 GBP to £11,021 GBP

B+
Cheapest Retailer
-
£4,949 GBP
₹632,523 INR
B+
Retailer 2
-
£5,092 GBP
A$10,512 AUD
View
B+
Retailer 3
-
£5,272 GBP
$7,075 USD
View
Final sale: no returns
B+
Retailer 4
-
£5,531 GBP
$7,422 USD
View
B+
Retailer 5
-
£5,695 GBP
$7,642 USD
View
B+
Retailer 6
-
£5,777 GBP
$7,753 USD
View
B
Retailer 7
-
£6,006 GBP
$8,060 USD
View
B
Retailer 8
-
£6,073 GBP
$8,150 USD
View
B
Retailer 9
-
£6,082 GBP
$8,162 USD
View
B
Retailer 10
-
£6,093 GBP
View
Retailer 11
-
£6,349 GBP
A$13,107 AUD
View
Price last confirmed 9 days ago
B
Retailer 12
-
£6,359 GBP
View
Retailer 13
-
£6,442 GBP
$8,645 USD
View
Price last confirmed 8 days ago
B
Retailer 14
-
£6,552 GBP
$8,792 USD
View
B
Retailer 15
-
£6,589 GBP
$8,842 USD
View
B
Retailer 16
-
£6,637 GBP
$8,907 USD
View
B
Retailer 17
-
£6,733 GBP
$9,035 USD
View
B
Retailer 18
-
£6,768 GBP
€8,650 EUR
View
B
Retailer 19
-
£7,542 GBP
$10,121 USD
View
B
Retailer 20
-
£9,232 GBP
View
Most Expensive
B
NZ Jewellers
6bb1fa8d-6ca7-4383-a961-5087c68daff0 · Oct 30
£11,021 GBP
$14,789 USD
View
20 more retailers have this diamond
Prices start from £4,949 GBPSave up to £6,071 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.

B+
1.51ct Marquise
£4,949 GBP