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Cushion|Lab Grown|GIA

1.34ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • GIA 6442530641

Certificate GIA 6442530641

Diamond specifications and retailer prices

From £394 GBP
$528 USD
As of October 30, 2026
Save £1,464 GBP (79%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,858 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.34ct lab-grown cushion diamond

This 1.34ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6442530641. Listed at 6 retailers as of October 30, 2026, with prices from £394 to £1,858, a £1,464 spread on the same certified stone. Do Amore Diamonds lists it at £1,858. 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

1.34
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6442530641
Dimensions6.47 × 6.46 × 4.34 mm
L/W Ratio1.00
Top View
6.47 mm6.46 mm1.34 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6442530641
Side View
Table 59.0%CrownGirdlePavilionCulet: NoneDepth 67.2%

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: Oct 30
Current: £1,679 GBP|Low: £394 GBP|High: £1,679 GBP|Avg: £856 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 5£394 GBP
Retailer 3£396 GBP
Retailer 4£428 GBP
Retailer 2£1,147 GBP
Do Amore Diamonds£1,679 GBP

11 data points across 5 retailers

6 retailers£394 GBP to £1,858 GBP

A
Cheapest Retailer
-
£394 GBP
$528 USD
A
Retailer 2
-
£396 GBP
$530 USD
View
B+
Retailer 3
-
£428 GBP
$573 USD
View
B
Retailer 4
-
£1,147 GBP
View
B
Retailer 5
-
£1,679 GBP
$2,250 USD
View
Most Expensive
B
Do Amore Diamonds
27-C456CDF15 · Oct 31
£1,858 GBP
$2,490 USD
View
5 more retailers have this diamond
Prices start from £394 GBPSave up to £1,464 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
1.34ct Cushion
£394 GBP