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Marquise|Natural|GIA

1.50ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 2554854633

Certificate GIA 2554854633

Diamond specifications and retailer prices

From £5,060 GBP
$6,780 USD
As of November 1, 2026
Save £5,994 GBP (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £11,054 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2554854633. Listed at 15 retailers as of October 30, 2026, with prices from £5,060 to £11,054, a £5,994 spread on the same certified stone. NZ Jewellers lists it at £11,054. 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
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2554854633
Dimensions13.08 × 5.79 × 3.32 mm
L/W Ratio2.26
Culet sizeNone
Top View
13.08 mm5.79 mm1.50 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2554854633
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 57.3%

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 1
Current: £11,054 GBP|Low: £5,060 GBP|High: £11,054 GBP|Avg: £6,574 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 11£5,060 GBP
Retailer 15£5,174 GBP
Retailer 14£5,175 GBP
Retailer 13£5,527 GBP
Retailer 3£5,573 GBP
Retailer 6£5,888 GBP
Retailer 4£5,988 GBP
Retailer 12£6,080 GBP
Retailer 9£6,110 GBP
Retailer 2£6,446 GBP
Retailer 5£6,909 GBP
Retailer 8£7,220 GBP
Retailer 7£7,278 GBP
Retailer 10£9,211 GBP
NZ Jewellers£11,054 GBP

33 data points across 15 retailers

15 retailers£5,060 GBP to £11,054 GBP

B+
Cheapest Retailer
-
£5,060 GBP
$6,780 USD
B+
Retailer 2
-
£5,174 GBP
$6,932 USD
View
B+
Retailer 3
-
£5,175 GBP
$6,934 USD
View
Retailer 4
-
£5,527 GBP
$7,405 USD
View
Price last confirmed 17 days ago
B+
Retailer 5
-
£5,573 GBP
$7,467 USD
View
B
Retailer 6
-
£5,888 GBP
$7,889 USD
View
B
Retailer 7
-
£5,988 GBP
$8,023 USD
View
B
Retailer 8
-
£6,080 GBP
$8,146 USD
View
B
Retailer 9
-
£6,110 GBP
View
B
Retailer 10
-
£6,446 GBP
View
B
Retailer 11
-
£6,909 GBP
$9,257 USD
View
B
Retailer 12
-
£7,220 GBP
€9,213 EUR
View
Retailer 13
-
£7,278 GBP
$9,752 USD
View
Price last confirmed 18 days ago
B
Retailer 14
-
£9,211 GBP
View
Most Expensive
C
NZ Jewellers
150c9ee6-7095-4d96-b34d-863aac97d91e · Oct 30
£11,054 GBP
$14,811 USD
View
14 more retailers have this diamond
Prices start from £5,060 GBPSave up to £5,994 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
£5,060 GBP