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Marquise|Natural|GIA

1.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2566386329

Certificate GIA 2566386329

Diamond specifications and retailer prices

From £6,486 GBP
SGD 11,762 SGD
As of October 31, 2026
Save £5,172 GBP (44%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £11,658 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566386329. Listed at 17 retailers as of October 30, 2026, with prices from £6,486 to £11,658, a £5,172 spread on the same certified stone. NZ Jewellers lists it at £11,658. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566386329
Dimensions11.08 × 5.84 × 3.77 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural, Natural
Top View
11.08 mm5.84 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566386329
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.6%

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: Oct 31
Current: £7,864 GBP|Low: £5,485 GBP|High: £10,924 GBP|Avg: £7,612 GBP
Retailer 1
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 6£5,485 GBP
Retailer 4£6,486 GBP
Retailer 15£6,722 GBP
Retailer 5£6,775 GBP
Retailer 14£6,794 GBP
Retailer 12£6,832 GBP
Retailer 11£7,302 GBP
Retailer 7£7,506 GBP
Retailer 9£7,667 GBP
Retailer 1£7,864 GBP
Retailer 13£8,144 GBP
Retailer 8£8,482 GBP
Retailer 3£8,910 GBP
Retailer 2£9,544 GBP
Retailer 10£10,924 GBP

22 data points across 15 retailers

17 retailers£6,486 GBP to £11,658 GBP

Retailer 1
-
£5,485 GBP
HK$57,500 HKD
Price last confirmed 13 days ago
Retailer 2
-
£5,908 GBP
$7,928 USD
View
Price last confirmed 25 days ago
B+
Retailer 3
-
£6,486 GBP
SGD 11,762 SGD
View
Retailer 4
-
£6,722 GBP
$9,020 USD
View
Price last confirmed 13 days ago
Retailer 5
-
£6,776 GBP
$9,093 USD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
£6,794 GBP
CA$12,663 CAD
View
B+
Retailer 7
-
£6,832 GBP
$9,169 USD
View
B+
Retailer 8
-
£7,302 GBP
$9,799 USD
View
Retailer 9
-
£7,506 GBP
$10,073 USD
View
Price last confirmed 15 days ago
B
Retailer 10
-
£7,667 GBP
View
Retailer 11
-
£7,864 GBP
$10,553 USD
View
B
Retailer 12
-
£8,144 GBP
$10,929 USD
View
B
Retailer 13
-
£8,482 GBP
€10,840 EUR
View
Retailer 14
-
£8,910 GBP
ZAR 193,167 ZAR
View
Price last confirmed 16 days ago
Retailer 15
-
£9,544 GBP
View
Price last confirmed 13 days ago
B
Retailer 16
-
£10,924 GBP
View
Most Expensive
B
NZ Jewellers
11a2c466-eaa3-4932-8d53-641ef062e906 · Oct 30
£11,658 GBP
$15,644 USD
View
16 more retailers have this diamond
Prices start from £6,486 GBPSave up to £5,172 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
£6,486 GBP