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Marquise|Natural|GIA

1.50ct M SI1 Marquise Natural Diamond

GD • M/SI1 • GIA 5566040285

Certificate GIA 5566040285

Diamond specifications and retailer prices

From £1,779 GBP
As of November 4, 2026
Save £1,178 GBP (40%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,957 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 5566040285. Listed at 5 retailers as of November 4, 2026, with prices from £1,779 to £2,957, a £1,178 spread on the same certified stone. Wholesale Diamonds Direct lists it at £2,957. 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

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

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle42.37°
Pavilion angle40.09°
OriginNatural
Grading LabGIA
CertificateGIA 5566040285
Dimensions10.59 × 5.76 × 3.90 mm
L/W Ratio1.84
Culet sizeNone
Top View
10.59 mm5.76 mm1.50 ctM / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5566040285
Side View
Table 57.0%Crown 42.37°Girdle: MED-ETKPavilion 40.09°Culet: NoneDepth 67.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £2,311 GBP|Low: £1,779 GBP|High: £3,820 GBP|Avg: £2,298 GBP|-16.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Wholesale Diamonds Direct
November 6, 2026
Retailer 2£1,779 GBP
Retailer 4£1,808 GBP
Retailer 5£1,830 GBP
Retailer 3£2,213 GBP
Retailer 1£2,311 GBP
Wholesale Diamonds Direct£2,957 GBP

33 data points across 6 retailers

5 retailers£1,779 GBP to £2,957 GBP

B+
Cheapest Retailer
-
£1,779 GBP
B+
Retailer 2
-
£1,808 GBP
View
B+
Retailer 3
-
£2,213 GBP
View
B+
Retailer 4
-
£2,311 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
323485802 · Nov 4
£2,957 GBP
$3,980 USD
View
4 more retailers have this diamond
Prices start from £1,779 GBPSave up to £1,178 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+
1.50ct Marquise
£1,779 GBP