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Marquise|Natural|GIA

1.50ct M SI1 Marquise Natural Diamond

EX • M/SI1 • GIA 3555373615

Certificate GIA 3555373615

Diamond specifications and retailer prices

From £2,111 GBP
As of November 6, 2026
Save £2,109 GBP (50%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,220 GBP at Wholesale Diamonds Direct · As of November 4, 2026
View at Wholesale Diamonds Direct

About this 1.5ct natural marquise diamond

This 1.5ct 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555373615. Listed at 9 retailers as of November 4, 2026, with prices from £2,111 to £4,220, a £2,109 spread on the same certified stone. Wholesale Diamonds Direct lists it at £4,220. 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

1.50
Carat
M
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3555373615
Dimensions10.96 × 5.92 × 3.88 mm
L/W Ratio1.85
Girdle conditionFaceted
Top View
10.96 mm5.92 mm1.50 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3555373615
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.5%

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 6
Current: £3,204 GBP|Low: £2,092 GBP|High: £5,117 GBP|Avg: £3,064 GBP|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 6, 2026
Retailer 6£2,111 GBP
Retailer 10£2,340 GBP
Retailer 8£2,350 GBP
Retailer 4£2,428 GBP
Retailer 5£2,530 GBP
Retailer 7£2,553 GBP
Retailer 9£2,853 GBP
Retailer 1£3,204 GBP
Retailer 3£3,544 GBP
Wholesale Diamonds Direct£4,220 GBP
Retailer 2£5,117 GBP

21 data points across 11 retailers

9 retailers£2,111 GBP to £4,220 GBP

A
Cheapest Retailer
-
£2,111 GBP
B+
Retailer 2
-
£2,350 GBP
View
B+
Retailer 3
-
£2,428 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,530 GBP
View
B+
Retailer 5
-
£2,553 GBP
View
B
Retailer 6
-
£2,853 GBP
View
B
Retailer 7
-
£3,204 GBP
View
B
Retailer 8
-
£3,544 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
625971138 · Nov 4
£4,220 GBP
$5,680 USD
View
8 more retailers have this diamond
Prices start from £2,111 GBPSave up to £2,109 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
1.50ct Marquise
£2,111 GBP