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Marquise|Natural|GIA

1.51ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 2245057622

Certificate GIA 2245057622

Diamond specifications and retailer prices

From £5,396 GBP
As of November 3, 2026
Save £3,310 GBP (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £8,706 GBP at Helzberg Diamonds · As of November 3, 2026
View at Helzberg Diamonds

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245057622. Listed at 12 retailers as of November 3, 2026, with prices from £5,396 to £8,706, a £3,310 spread on the same certified stone. Helzberg Diamonds lists it at £8,706. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.37°
Pavilion angle41.86°
OriginNatural
Grading LabGIA
CertificateGIA 2245057622
Dimensions11.44 × 6.05 × 3.87 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.44 mm6.05 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2245057622
Side View
Table 58.0%Crown 36.37°Girdle: STK-THKPavilion 41.86°Culet: NoneDepth 64.1%

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 3
Current: £8,706 GBP|Low: £5,396 GBP|High: £9,377 GBP|Avg: £6,775 GBP|-7.2%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9£5,396 GBP
Retailer 11£5,517 GBP
Retailer 12£5,727 GBP
Retailer 5£5,762 GBP
Retailer 3£5,826 GBP
Retailer 4£5,906 GBP
Retailer 10£5,914 GBP
Retailer 8£6,698 GBP
Retailer 7£6,876 GBP
Retailer 6£7,511 GBP
Retailer 2£7,953 GBP
Helzberg Diamonds£8,706 GBP

39 data points across 12 retailers

12 retailers£5,396 GBP to £8,706 GBP

A
Cheapest Retailer
-
£5,396 GBP
A
Retailer 2
-
£5,517 GBP
View
A
Retailer 3
-
£5,727 GBP
View
A
Retailer 4
-
£5,762 GBP
View
A
Retailer 5
-
£5,826 GBP
View
A
Retailer 6
-
£5,906 GBP
View
A
Retailer 7
-
£5,914 GBP
View
A
Retailer 8
-
£6,698 GBP
View
A
Retailer 9
-
£6,876 GBP
View
B+
Retailer 10
-
£7,511 GBP
View
B+
Retailer 11
-
£7,953 GBP
View
Most Expensive
B+
Helzberg Diamonds
XZRIIKLGLNMII · Nov 3
£8,706 GBP
$11,653 USD
View
11 more retailers have this diamond
Prices start from £5,396 GBPSave up to £3,310 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
£5,396 GBP