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Marquise|Natural|GIA

1.51ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 6561292508

Certificate GIA 6561292508

Diamond specifications and retailer prices

From £4,768 GBP
SGD 8,646 SGD
As of November 1, 2026
Save £1,990 GBP (29%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £6,758 GBP at Diamonds Direct · As of November 1, 2026
View at 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 H 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 6561292508. Listed at 13 retailers as of November 1, 2026, with prices from £4,768 to £6,758, a £1,990 spread on the same certified stone. Diamonds Direct lists it at £6,758. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.98°
Pavilion angle39.28°
OriginNatural
Grading LabGIA
CertificateGIA 6561292508
Dimensions11.22 × 5.91 × 3.76 mm
L/W Ratio1.90
Culet sizeNone
Top View
11.22 mm5.91 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561292508
Side View
Table 59.0%Crown 39.98°Girdle: STK-THKPavilion 39.28°Culet: NoneDepth 63.7%

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 1
Current: £6,758 GBP|Low: £4,768 GBP|High: £7,106 GBP|Avg: £5,686 GBP|-4.9%
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 11£4,768 GBP
Retailer 7£4,864 GBP
Retailer 13£4,963 GBP
Retailer 10£4,982 GBP
Retailer 8£5,045 GBP
Retailer 9£5,114 GBP
Retailer 6£5,260 GBP
Retailer 12£5,328 GBP
Retailer 4£5,957 GBP
Retailer 3£6,000 GBP
Retailer 5£6,050 GBP
Retailer 2£6,073 GBP
Diamonds Direct£6,758 GBP

31 data points across 13 retailers

13 retailers£4,768 GBP to £6,758 GBP

A
Cheapest Retailer
-
£4,768 GBP
SGD 8,646 SGD
A
Retailer 2
-
£4,864 GBP
$6,527 USD
View
A
Retailer 3
-
£4,963 GBP
SGD 9,000 SGD
View
A
Retailer 4
-
£4,982 GBP
$6,685 USD
View
A
Retailer 5
-
£5,045 GBP
$6,770 USD
View
A
Retailer 6
-
£5,114 GBP
$6,863 USD
View
A
Retailer 7
-
£5,260 GBP
View
B+
Retailer 8
-
£5,328 GBP
$7,150 USD
View
B+
Retailer 9
-
£5,957 GBP
$7,993 USD
View
B+
Retailer 10
-
£6,000 GBP
$8,052 USD
View
B+
Retailer 11
-
£6,050 GBP
$8,118 USD
View
B+
Retailer 12
-
£6,073 GBP
€7,762 EUR
View
Most Expensive
B
Diamonds Direct
1112251 · Nov 1
£6,758 GBP
$9,069 USD
View
12 more retailers have this diamond
Prices start from £4,768 GBPSave up to £1,990 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
£4,768 GBP