Marquise|Natural|GIA

1.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 7541535497

Certificate GIA 7541535497

Diamond specifications and retailer prices

From £5,202 GBP
$6,981 USD
As of November 1, 2026
Save £4,056 GBP (44%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £11,111 GBP at NZ Jewellers · As of September 29, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7541535497. Listed at 26 retailers as of November 1, 2026, with a 78% 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.56°
Pavilion angle39.19°
OriginNatural
Grading LabGIA
CertificateGIA 7541535497
Dimensions11.16 × 5.87 × 3.75 mm
L/W Ratio1.90
Girdle conditionExtremely Thick
Key to symbols
Twinning Wisp, Feather, Natural
Top View
11.16 mm5.87 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7541535497
Side View
Table 60.0%Crown 38.56°Girdle: THK-ETKPavilion 39.19°Culet: NoneDepth 63.8%

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: £6,480 GBP|Low: £5,092 GBP|High: £9,370 GBP|Avg: £6,562 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7£5,202 GBP
Retailer 6£5,555 GBP
Retailer 5£5,555 GBP
Retailer 8£5,602 GBP
Retailer 3£6,142 GBP
Retailer 1£6,480 GBP
Retailer 2£7,257 GBP
Retailer 4£9,259 GBP

38 data points across 8 retailers

26 retailers£5,202 GBP to £9,259 GBP

B+
Cheapest Retailer
-
£5,202 GBP
$6,981 USD
B+
Retailer 2
-
£5,555 GBP
$7,454 USD
View
Final sale: no returns
B+
Retailer 3
-
£5,555 GBP
$7,455 USD
View
Retailer 4
-
£5,555 GBP
$7,455 USD
View
Price last confirmed 17 days ago
B+
Retailer 5
-
£5,602 GBP
$7,517 USD
View
B+
Retailer 6
-
£5,918 GBP
$7,942 USD
View
Retailer 7
-
£6,018 GBP
$8,076 USD
View
Price last confirmed 42 days ago
Retailer 8
-
£6,018 GBP
$8,076 USD
View
Price last confirmed 25 days ago
Retailer 9
-
£6,018 GBP
$8,076 USD
View
Price last confirmed 11 days ago
Retailer 10
-
£6,111 GBP
$8,201 USD
View
Price last confirmed 32 days ago
B+
Retailer 11
-
£6,111 GBP
$8,201 USD
View
B+
Retailer 12
-
£6,142 GBP
View
B
Retailer 13
-
£6,371 GBP
$8,550 USD
View
B
Retailer 14
-
£6,371 GBP
$8,550 USD
View
B+
Retailer 15
-
£6,480 GBP
View
B
Retailer 16
-
£6,580 GBP
$8,830 USD
View
B
Retailer 17
-
£6,944 GBP
$9,319 USD
View
Retailer 18
-
£6,944 GBP
$9,319 USD
View
Price last confirmed 42 days ago
Retailer 19
-
£6,944 GBP
$9,319 USD
View
Price last confirmed 24 days ago
Retailer 20
-
£6,944 GBP
$9,319 USD
View
Price last confirmed 12 days ago
B
Retailer 21
-
£7,257 GBP
€9,275 EUR
View
Retailer 22
-
£7,316 GBP
$9,818 USD
View
Price last confirmed 18 days ago
B
Retailer 23
-
£9,259 GBP
View
Retailer 24
-
£11,111 GBP
$14,910 USD
View
Price last confirmed 42 days ago
Retailer 25
-
£11,111 GBP
$14,910 USD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
05ef0276-1128-4532-9b9c-db9d5ddd9864 · Sep 29
£11,111 GBP
$14,910 USD
View
Price last confirmed 34 days ago
25 more retailers have this diamond
Prices start from £5,202 GBPSave up to £4,056 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
£5,202 GBP