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Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 5553731926

Certificate GIA 5553731926

Diamond specifications and retailer prices

From £6,795 GBP
$9,029 USD
As of October 29, 2026
Save £4,163 GBP (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £10,958 GBP at NZ Jewellers · As of October 27, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553731926. Listed at 9 retailers as of October 27, 2026, with prices from £6,795 to £10,958, a £4,163 spread on the same certified stone. NZ Jewellers lists it at £10,958. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553731926
Dimensions10.94 × 5.98 × 3.80 mm
L/W Ratio1.83
Top View
10.94 mm5.98 mm1.51 ctD / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553731926
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.4%

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: Oct 29
Current: £10,958 GBP|Low: £6,795 GBP|High: £10,958 GBP|Avg: £7,908 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 9£6,795 GBP
Retailer 2£6,811 GBP
Retailer 8£6,811 GBP
Retailer 7£7,222 GBP
Retailer 5£7,337 GBP
Retailer 4£7,797 GBP
Retailer 3£7,916 GBP
Retailer 6£10,237 GBP
NZ Jewellers£10,958 GBP

15 data points across 9 retailers

9 retailers£6,795 GBP to £10,958 GBP

A
Cheapest Retailer
-
£6,795 GBP
$9,029 USD
A
Retailer 2
-
£6,811 GBP
$9,050 USD
View
A
Retailer 3
-
£6,811 GBP
$9,050 USD
View
A
Retailer 4
-
£7,222 GBP
A$14,764 AUD
View
A
Retailer 5
-
£7,337 GBP
View
B+
Retailer 6
-
£7,797 GBP
$10,360 USD
View
B+
Retailer 7
-
£7,916 GBP
$10,519 USD
View
B+
Retailer 8
-
£10,237 GBP
View
Most Expensive
B
NZ Jewellers
5382c10c-e26f-43bf-a2f9-6991835ace68 · Oct 27
£10,958 GBP
$14,560 USD
View
8 more retailers have this diamond
Prices start from £6,795 GBPSave up to £4,163 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
£6,795 GBP