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Marquise|Natural|GIA

1.51ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 1568097239

Certificate GIA 1568097239

Diamond specifications and retailer prices

From £2,869 GBP
As of November 6, 2026
Save £3,541 GBP (55%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £6,409 GBP at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1568097239. Listed at 9 retailers as of November 5, 2026, with prices from £2,869 to £6,409, a £3,541 spread on the same certified stone. NZ Jewellers lists it at £6,409. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1568097239
Dimensions12.66 × 5.75 × 3.59 mm
L/W Ratio2.20
Girdle conditionThick to Very Thick
Key to symbols
Crystal, Feather, Knot
Top View
12.66 mm5.75 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1568097239
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.4%

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: Nov 6
Current: £6,409 GBP|Low: £2,840 GBP|High: £6,932 GBP|Avg: £4,392 GBP|-7.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7£2,869 GBP
Retailer 2£2,908 GBP
Retailer 8£3,406 GBP
Retailer 4£3,833 GBP
Retailer 5£3,833 GBP
Retailer 9£3,889 GBP
Retailer 3£4,282 GBP
Retailer 6£6,103 GBP
NZ Jewellers£6,409 GBP

43 data points across 9 retailers

9 retailers£2,869 GBP to £6,409 GBP

A
Cheapest Retailer
-
£2,869 GBP
A
Retailer 2
-
£2,908 GBP
View
A
Retailer 3
-
£3,406 GBP
View
B+
Retailer 4
-
£3,833 GBP
View
B+
Retailer 5
-
£3,833 GBP
View
Retailer 6
-
£3,889 GBP
View
Price last confirmed 10 days ago
B+
Retailer 7
-
£4,282 GBP
View
B
Retailer 8
-
£6,103 GBP
View
Most Expensive
B
NZ Jewellers
36ec7b45-4450-485b-bd0d-28a85baec80c · Nov 5
£6,409 GBP
$8,579 USD
View
8 more retailers have this diamond
Prices start from £2,869 GBPSave up to £3,541 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
£2,869 GBP