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Cushion|Natural|GIA

1.33ct M SI1 Cushion Natural Diamond

EX • M/SI1 • GIA 6312661439

Certificate GIA 6312661439

Diamond specifications and retailer prices

From £975 GBP
As of November 6, 2026
Save £817 GBP (46%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,792 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.33ct natural cushion diamond

This 1.33ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6312661439. Listed at 9 retailers as of November 6, 2026, with prices from £975 to £1,792, a £817 spread on the same certified stone. Yorxs lists it at £1,792. 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

1.33
Carat
M
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6312661439
Dimensions6.07 × 5.93 × 4.06 mm
L/W Ratio1.02
Top View
6.07 mm5.93 mm1.33 ctM / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6312661439
Side View
Table 60.0%CrownGirdlePavilionCulet: NoneDepth 68.4%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £1,297 GBP|Low: £965 GBP|High: £1,802 GBP|Avg: £1,370 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Yorxs
November 6, 2026
Retailer 3£975 GBP
Retailer 6£1,202 GBP
Retailer 1£1,297 GBP
Retailer 5£1,297 GBP
Retailer 4£1,319 GBP
Retailer 8£1,367 GBP
Retailer 7£1,421 GBP
Retailer 2£1,610 GBP
Yorxs£1,792 GBP

30 data points across 9 retailers

9 retailers£975 GBP to £1,792 GBP

A
Cheapest Retailer
-
£975 GBP
B+
Retailer 2
-
£1,202 GBP
View
B+
Retailer 3
-
£1,297 GBP
View
B+
Retailer 4
-
£1,297 GBP
View
Retailer 5
-
£1,319 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£1,367 GBP
View
B+
Retailer 7
-
£1,421 GBP
View
B
Retailer 8
-
£1,610 GBP
View
Most Expensive
B
Yorxs
B4D89F890 · Nov 6
£1,792 GBP
€2,284 EUR
View
8 more retailers have this diamond
Prices start from £975 GBPSave up to £817 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
1.33ct Cushion
£975 GBP