Marquise|Natural|GIA

1.02ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 7542390407

Certificate GIA 7542390407

Diamond specifications and retailer prices

From £2,491 GBP
As of November 2, 2026
Save £2,023 GBP (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,787 GBP at NZ Jewellers · As of September 27, 2026
View at NZ Jewellers

About this 1.02ct natural marquise diamond

This 1.02ct natural marquise sits in the classic one-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 7542390407. Listed at 11 retailers as of November 2, 2026, with a 81% 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

1.02
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle34.47°
Pavilion angle39.6°
OriginNatural
Grading LabGIA
CertificateGIA 7542390407
Dimensions11.67 × 5.07 × 2.92 mm
L/W Ratio2.30
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Crystal, Feather, Cavity, Needle
Top View
11.67 mm5.07 mm1.02 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7542390407
Side View
Table 63.0%Crown 34.47°GirdlePavilion 39.6°CuletDepth 57.6%

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: Nov 2
Current: £2,633 GBP|Low: £2,458 GBP|High: £4,651 GBP|Avg: £3,062 GBP|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2£2,491 GBP
Retailer 5£2,495 GBP
Retailer 1£2,633 GBP
Retailer 4£2,634 GBP
Retailer 6£2,943 GBP
Retailer 7£3,341 GBP
Retailer 3£4,514 GBP

38 data points across 7 retailers

11 retailers£2,491 GBP to £4,514 GBP

B+
Cheapest Retailer
-
£2,491 GBP
B+
Retailer 2
-
£2,495 GBP
$3,348 USD
View
B+
Retailer 3
-
£2,633 GBP
View
B+
Retailer 4
-
£2,634 GBP
$3,535 USD
View
Retailer 5
-
£2,748 GBP
$3,687 USD
View
Price last confirmed 37 days ago
Retailer 6
-
£2,748 GBP
$3,687 USD
View
Price last confirmed 26 days ago
Retailer 7
-
£2,853 GBP
$3,829 USD
View
Price last confirmed 32 days ago
Retailer 8
-
£2,943 GBP
A$6,076 AUD
View
Price last confirmed 24 days ago
B
Retailer 9
-
£4,514 GBP
View
Retailer 10
-
£4,787 GBP
$6,424 USD
View
Price last confirmed 27 days ago
Most Expensive
NZ Jewellers
6d6e99fe-0787-4fff-9ef9-05fdda53dd27 · Sep 27
£4,787 GBP
$6,424 USD
View
Price last confirmed 36 days ago
10 more retailers have this diamond
Prices start from £2,491 GBPSave up to £2,023 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+
1.02ct Marquise
£2,491 GBP