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Marquise|Natural|GIA

1.30ct G SI2 Marquise Natural Diamond

EX • G/SI2

Diamond specifications and retailer prices

From £3,988 GBP
As of November 6, 2026
Save £1,395 GBP (26%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £5,383 GBP at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 1.3ct natural marquise diamond

This 1.3ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded G 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. Listed at 4 retailers as of November 6, 2026, with prices from £3,988 to £5,383, a £1,395 spread on the same certified stone. The Diamond Guys lists it at £5,383. 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

1.30
Carat
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
Dimensions10.24 × 5.64 × 3.60 mm
L/W Ratio1.82
Top View
10.24 mm5.64 mm1.30 ctG / SI2
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceFaint
CertificateGIA
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 63.7%

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 6
Current: £5,353 GBP|Low: £3,988 GBP|High: £5,592 GBP|Avg: £4,936 GBP|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
The Diamond Guys
September 30, 2026
Retailer 2£3,988 GBP
Retailer 5£4,557 GBP
Retailer 6£4,845 GBP
Retailer 4£4,847 GBP
Retailer 1£5,353 GBP
The Diamond Guys£5,383 GBP
Retailer 3£5,592 GBP

7 data points across 7 retailers

4 retailers£3,988 GBP to £5,383 GBP

B+
Cheapest Retailer
-
£3,988 GBP
B+
Retailer 2
-
£4,557 GBP
View
B
Retailer 3
-
£4,845 GBP
View
Most Expensive
B
The Diamond Guys
1973034247 · Nov 6
£5,383 GBP
$7,205 USD
View
3 more retailers have this diamond
Prices start from £3,988 GBPSave up to £1,395 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+
1.30ct Marquise
£3,988 GBP