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Marquise|Natural|GIA

1.51ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 6552134886

Certificate GIA 6552134886

Diamond specifications and retailer prices

From £3,747 GBP
As of November 5, 2026
Save £4,648 GBP (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £8,395 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 6552134886. Listed at 11 retailers as of November 5, 2026, with prices from £3,747 to £8,395, a £4,648 spread on the same certified stone. NZ Jewellers lists it at £8,395. 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
FluorescenceFaint
Crown angle39.25°
Pavilion angle37.96°
OriginNatural
Grading LabGIA
CertificateGIA 6552134886
Dimensions11.43 × 6.00 × 3.62 mm
L/W Ratio1.91
Top View
11.43 mm6.00 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6552134886
Side View
Table 60.0%Crown 39.25°Girdle: MED-THKPavilion 37.96°Culet: NoneDepth 60.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £8,395 GBP|Low: £3,735 GBP|High: £8,395 GBP|Avg: £5,588 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6£4,152 GBP
Retailer 7£4,783 GBP
Retailer 4£4,813 GBP
Retailer 2£4,842 GBP
Retailer 3£5,204 GBP
Retailer 5£7,375 GBP
NZ Jewellers£8,395 GBP

44 data points across 7 retailers

11 retailers£3,747 GBP to £8,395 GBP

A
Cheapest Retailer
-
£3,747 GBP
B+
Retailer 2
-
£4,152 GBP
View
B+
Retailer 3
-
£4,341 GBP
View
B+
Retailer 4
-
£4,675 GBP
View
B+
Retailer 5
-
£4,783 GBP
View
B+
Retailer 6
-
£4,813 GBP
View
B
Retailer 7
-
£4,842 GBP
View
B
Retailer 8
-
£5,204 GBP
View
B
Retailer 9
-
£7,346 GBP
View
B
Retailer 10
-
£7,375 GBP
View
Most Expensive
B
NZ Jewellers
fd4a4456-929f-49f5-a6ea-2318e72cb3b8 · Nov 5
£8,395 GBP
$11,236 USD
View
10 more retailers have this diamond
Prices start from £3,747 GBPSave up to £4,648 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
£3,747 GBP