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Marquise|Natural|GIA

0.40ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1563195030

Certificate GIA 1563195030

Diamond specifications and retailer prices

From £171 GBP
₹21,842 INR
As of November 1, 2026
Save £390 GBP (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £931 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-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 1563195030. Listed at 15 retailers as of November 1, 2026, with a 228% 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

0.40
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1563195030
Dimensions8.21 × 3.58 × 2.32 mm
L/W Ratio2.29
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
8.21 mm3.58 mm0.40 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1563195030
Side View
Table 60.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 64.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £931 GBP|Low: £171 GBP|High: £931 GBP|Avg: £356 GBP
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
November 2, 2026
Retailer 8£171 GBP
Retailer 13£213 GBP
Retailer 5£224 GBP
Retailer 11£235 GBP
Retailer 6£243 GBP
Retailer 4£261 GBP
Retailer 14£271 GBP
Retailer 9£275 GBP
Retailer 7£313 GBP
Retailer 3£327 GBP
Retailer 10£455 GBP
Retailer 2£491 GBP
Retailer 12£561 GBP
NZ Jewellers£931 GBP

25 data points across 14 retailers

15 retailers£171 GBP to £561 GBP

A
Cheapest Retailer
-
£171 GBP
₹21,842 INR
A
Retailer 2
-
£213 GBP
$285 USD
View
B+
Retailer 3
-
£224 GBP
$300 USD
View
Final sale: no returns
A
Retailer 4
-
£235 GBP
$315 USD
View
A
Retailer 5
-
£243 GBP
$325 USD
View
A
Retailer 6
-
£261 GBP
$350 USD
View
B+
Retailer 7
-
£271 GBP
$363 USD
View
A
Retailer 8
-
£275 GBP
$368 USD
View
B+
Retailer 9
-
£313 GBP
View
B+
Retailer 10
-
£327 GBP
$438 USD
View
B+
Retailer 11
-
£340 GBP
$456 USD
View
B
Retailer 12
-
£455 GBP
€580 EUR
View
B
Retailer 13
-
£491 GBP
View
B
Retailer 14
-
£561 GBP
View
Most Expensive
NZ Jewellers
06be3160-0af0-4ea4-95eb-8f53c67a38e1 · Oct 30
£931 GBP
$1,247 USD
View
Price under review
14 more retailers have this diamond
Prices start from £171 GBPSave up to £390 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.

A
0.40ct Marquise
£171 GBP