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Marquise|Natural|GIA

1.51ct M SI1 Marquise Natural Diamond

VG • M/SI1 • GIA 2556328501

Certificate GIA 2556328501

Diamond specifications and retailer prices

From £2,200 GBP
As of November 6, 2026
3 retailers carry this diamond
Most expensive: £3,135 GBP at Wholesale Diamonds Direct · As of October 21, 2026
View at Wholesale 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556328501. Listed at 3 retailers as of November 6, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
M
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.45°
Pavilion angle37.25°
OriginNatural
Grading LabGIA
CertificateGIA 2556328501
Dimensions11.92 × 6.02 × 3.41 mm
L/W Ratio1.98
Culet sizeNone
Top View
11.92 mm6.02 mm1.51 ctM / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556328501
Side View
Table 61.0%Crown 35.45°Girdle: STK-THKPavilion 37.25°Culet: NoneDepth 56.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: £2,453 GBP|Low: £1,419 GBP|High: £3,340 GBP|Avg: £2,368 GBP|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Wholesale Diamonds Direct
October 23, 2026
Retailer 6£1,419 GBP
Retailer 4£1,883 GBP
Retailer 7£2,200 GBP
Retailer 3£2,332 GBP
Retailer 2£2,401 GBP
Retailer 1£2,453 GBP
Retailer 5£2,773 GBP
Wholesale Diamonds Direct£3,135 GBP

23 data points across 8 retailers

3 retailers

Retailer 1
-
£1,883 GBP
Price last confirmed 14 days ago
B+
Retailer 2
-
£2,200 GBP
View
Most Expensive
Wholesale Diamonds Direct
262936494 · Oct 21
£3,135 GBP
$4,219 USD
View
Price last confirmed 15 days ago
2 more retailers have this diamond
Prices start from £2,200 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.

B+
1.51ct Marquise
£2,200 GBP