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Round|Lab Grown|GIA

1.70ct D SI2 Round Lab Grown Diamond

EX • D/SI2 • GIA 2456007545

Certificate GIA 2456007545

Diamond specifications and retailer prices

From £296 GBP
$394 USD
As of October 29, 2026
Save £1,139 GBP (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,435 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2456007545. Listed at 16 retailers as of October 26, 2026, with prices from £296 to £1,435, a £1,139 spread on the same certified stone. MOH London lists it at £1,435. 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

1.70
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.2°
OriginLab Grown
Grading LabGIA
CertificateGIA 2456007545
Dimensions7.65 × 7.61 × 4.74 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.65 mm7.61 mm1.70 ctD / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2456007545
Side View
Table 57.0%Crown 34.5°Girdle: NUL-NULPavilion 41.2°Culet: NoneDepth 62.1%

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: £1,435 GBP|Low: £284 GBP|High: £1,451 GBP|Avg: £666 GBP|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 9£296 GBP
Retailer 11£366 GBP
Retailer 8£497 GBP
Retailer 2£547 GBP
Retailer 3£555 GBP
Retailer 4£575 GBP
Retailer 5£593 GBP
Retailer 7£668 GBP
Retailer 10£864 GBP
Retailer 6£888 GBP
MOH London£1,435 GBP

42 data points across 11 retailers

16 retailers£296 GBP to £1,435 GBP

A
Cheapest Retailer
-
£296 GBP
$394 USD
A
Retailer 2
-
£331 GBP
$441 USD
View
A
Retailer 3
-
£366 GBP
$488 USD
View
A
Retailer 4
-
£366 GBP
$488 USD
View
A
Retailer 5
-
£404 GBP
HK$4,200 HKD
View
B+
Retailer 6
-
£497 GBP
$662 USD
View
B+
Retailer 7
-
£547 GBP
View
B+
Retailer 8
-
£555 GBP
$739 USD
View
B+
Retailer 9
-
£575 GBP
View
B+
Retailer 10
-
£593 GBP
€752 EUR
View
B+
Retailer 11
-
£656 GBP
$873 USD
View
B+
Retailer 12
-
£668 GBP
$890 USD
View
B
Retailer 13
-
£864 GBP
$1,150 USD
View
B
Retailer 14
-
£888 GBP
$1,182 USD
View
B
Retailer 15
-
£1,179 GBP
$1,570 USD
View
Most Expensive
B
MOH London
2456007545 · Oct 26
£1,435 GBP
View
15 more retailers have this diamond
Prices start from £296 GBPSave up to £1,139 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
1.70ct Round
£296 GBP