Marquise|Natural|GIA

1.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 7553879339

Certificate GIA 7553879339

Diamond specifications and retailer prices

From £5,034 GBP
As of November 2, 2026
Save £3,513 GBP (41%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £10,257 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 J 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 7553879339. Listed at 19 retailers as of November 2, 2026, with a 70% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7553879339
Dimensions11.02 × 6.11 × 4.00 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
11.02 mm6.11 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7553879339
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.5%

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 2
Current: £10,257 GBP|Low: £4,420 GBP|High: £10,257 GBP|Avg: £5,818 GBP|+17.4%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 3, 2026
Retailer 11£4,822 GBP
Retailer 8£4,823 GBP
Retailer 10£4,946 GBP
Retailer 19£5,034 GBP
Retailer 4£5,036 GBP
Retailer 14£5,123 GBP
Retailer 17£5,148 GBP
Retailer 3£5,151 GBP
Retailer 9£5,225 GBP
Retailer 12£5,275 GBP
Retailer 6£5,304 GBP
Retailer 18£5,315 GBP
Retailer 13£5,724 GBP
Retailer 2£5,844 GBP
Retailer 21£5,928 GBP
Retailer 7£6,028 GBP
Retailer 20£6,245 GBP
Retailer 5£6,341 GBP
Retailer 15£6,402 GBP
Retailer 16£8,547 GBP
NZ Jewellers£10,257 GBP

30 data points across 21 retailers

19 retailers£5,034 GBP to £8,547 GBP

Retailer 1
-
£4,823 GBP
Price last confirmed 22 days ago
Retailer 2
-
£4,946 GBP
View
Price last confirmed 16 days ago
B+
Retailer 3
-
£5,034 GBP
View
Retailer 4
-
£5,123 GBP
View
Price last confirmed 34 days ago
B
Retailer 5
-
£5,148 GBP
View
B
Retailer 6
-
£5,151 GBP
View
Retailer 7
-
£5,225 GBP
View
Price last confirmed 18 days ago
Retailer 8
-
£5,275 GBP
View
Price last confirmed 12 days ago
Retailer 9
-
£5,304 GBP
View
Price last confirmed 22 days ago
B
Retailer 10
-
£5,315 GBP
View
B
Retailer 11
-
£5,724 GBP
View
B
Retailer 12
-
£5,844 GBP
View
B
Retailer 13
-
£5,928 GBP
View
Retailer 14
-
£6,028 GBP
View
Price last confirmed 17 days ago
B
Retailer 15
-
£6,245 GBP
View
Retailer 16
-
£6,341 GBP
View
Price last confirmed 21 days ago
B
Retailer 17
-
£6,402 GBP
View
B
Retailer 18
-
£8,547 GBP
View
Most Expensive
NZ Jewellers
1bad364c-c989-4b2b-9b91-ec43e7907c46 · Oct 30
£10,257 GBP
$13,729 USD
View
Price last confirmed 7 days ago
18 more retailers have this diamond
Prices start from £5,034 GBPSave up to £3,513 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
£5,034 GBP