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Cushion|Lab Grown|IGI

1.70ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1

Diamond specifications and retailer prices

From HK$2,562 HKD
£257 GBP
As of October 30, 2026
Save HK$6,084 HKD (70%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: HK$8,646 HKD at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 1.7ct lab-grown cushion diamond

This 1.7ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI. Listed at 4 retailers as of October 30, 2026, with prices from HK$2,562 to HK$8,646, a HK$6,084 spread on the same certified stone. The Diamond Guys lists it at HK$8,646. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.80 × 6.55 × 4.33 mm
L/W Ratio1.19
Top View
7.80 mm6.55 mm1.70 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 66.1%

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 30
Current: HK$2,562 HKD|Low: HK$2,558 HKD|High: HK$8,748 HKD|Avg: HK$5,434 HKD|-0.9%
Retailer 1
Retailer 2
Retailer 3
The Diamond Guys
October 30, 2026
Retailer 1HK$2,562 HKD
Retailer 3HK$3,868 HKD
Retailer 2HK$6,532 HKD
The Diamond GuysHK$8,646 HKD

13 data points across 4 retailers

4 retailersHK$2,562 HKD to HK$8,646 HKD

A
Cheapest Retailer
-
HK$2,562 HKD
£257 GBP
Retailer 2
-
HK$3,868 HKD
$493 USD
View
Price last confirmed 18 days ago
B
Retailer 3
-
HK$6,532 HKD
CA$1,156 CAD
View
Most Expensive
B
The Diamond Guys
1787444800 · Nov 1
HK$8,646 HKD
$1,102 USD
View
3 more retailers have this diamond
Prices start from HK$2,562 HKDSave up to HK$6,084 HKD

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 Cushion
HK$2,562 HKD