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Marquise|Natural|GIA

0.53ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6545889794

Certificate GIA 6545889794

Diamond specifications and retailer prices

From £314 GBP
$421 USD
As of October 29, 2026
Save £733 GBP (70%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,420 GBP at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 0.53ct natural marquise diamond

This 0.53ct natural marquise sits in the half to three-quarter carat band, graded I 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 6545889794. Listed at 10 retailers as of October 26, 2026, with a 233% 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

0.53
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545889794
Dimensions7.95 × 4.24 × 2.61 mm
L/W Ratio1.88
Top View
7.95 mm4.24 mm0.53 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545889794
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.6%

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: Oct 29
Current: £1,420 GBP|Low: £314 GBP|High: £1,680 GBP|Avg: £650 GBP|-9.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 5£314 GBP
Retailer 4£337 GBP
Retailer 8£382 GBP
Retailer 9£453 GBP
Retailer 3£470 GBP
Retailer 10£476 GBP
Retailer 7£487 GBP
Retailer 2£671 GBP
Retailer 6£1,047 GBP
NZ Jewellers£1,420 GBP

38 data points across 10 retailers

10 retailers£314 GBP to £1,047 GBP

A
Cheapest Retailer
-
£314 GBP
$421 USD
Final sale: no returns
A
Retailer 2
-
£337 GBP
₹42,986 INR
View
A
Retailer 3
-
£382 GBP
HK$4,000 HKD
View
Retailer 4
-
£453 GBP
$607 USD
View
Price last confirmed 10 days ago
A
Retailer 5
-
£470 GBP
$630 USD
View
Retailer 6
-
£476 GBP
SGD 861 SGD
View
Price last confirmed 8 days ago
Retailer 7
-
£487 GBP
$653 USD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
£671 GBP
View
B
Retailer 9
-
£1,047 GBP
View
Most Expensive
NZ Jewellers
a1c6fb37-1f6f-47e7-bd5d-5e214e2d21d6 · Oct 21
£1,420 GBP
$1,902 USD
View
Price last confirmed 12 days ago
9 more retailers have this diamond
Prices start from £314 GBPSave up to £733 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
0.53ct Marquise
£314 GBP