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Cushion|Lab Grown|IGI

1.00ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG689561775

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG689561775

Diamond specifications and retailer prices

From HK$1,473 HKD
As of November 6, 2026
Save HK$7,075 HKD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$8,549 HKD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG689561775 or 689561775. Listed at 14 retailers as of November 6, 2026, with prices from HK$1,473 to HK$8,549, a HK$7,075 spread on the same certified stone. Reve Diamonds lists it at HK$8,549. 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

1.00
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle43.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689561775
Dimensions6.04 × 6.01 × 3.97 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.04 mm6.01 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689561775
Side View
Table 62.0%Crown 36.6°Girdle: MED-THKPavilion 43.7°Culet: NoneDepth 66.1%

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: HK$3,135 HKD|Low: HK$1,458 HKD|High: HK$8,549 HKD|Avg: HK$3,989 HKD|+10.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
November 6, 2026
Retailer 2HK$1,473 HKD
Retailer 13HK$1,630 HKD
Retailer 10HK$2,524 HKD
Retailer 6HK$2,861 HKD
Retailer 12HK$2,923 HKD
Retailer 1HK$3,135 HKD
Retailer 5HK$3,166 HKD
Retailer 11HK$3,519 HKD
Retailer 9HK$4,036 HKD
Retailer 7HK$4,287 HKD
Retailer 4HK$4,546 HKD
Retailer 3HK$5,666 HKD
Retailer 8HK$7,618 HKD
Reve DiamondsHK$8,549 HKD

45 data points across 14 retailers

14 retailersHK$1,473 HKD to HK$8,549 HKD

A
Cheapest Retailer
-
HK$1,473 HKD
Final sale: no returns
Retailer 2
-
HK$1,630 HKD
View
Price last confirmed 13 days ago
A
Retailer 3
-
HK$2,524 HKD
View
A
Retailer 4
-
HK$2,861 HKD
View
A
Retailer 5
-
HK$2,923 HKD
View
B+
Retailer 6
-
HK$3,135 HKD
View
Retailer 7
-
HK$3,166 HKD
View
Price last confirmed 24 days ago
B+
Retailer 8
-
HK$3,519 HKD
View
B+
Retailer 9
-
HK$4,036 HKD
View
B+
Retailer 10
-
HK$4,287 HKD
View
B+
Retailer 11
-
HK$4,546 HKD
View
B
Retailer 12
-
HK$5,666 HKD
View
B
Retailer 13
-
HK$7,618 HKD
View
Most Expensive
B
Reve Diamonds
C99BFAB20 · Nov 6
HK$8,549 HKD
$1,091 USD
View
13 more retailers have this diamond
Prices start from HK$1,473 HKDSave up to HK$7,075 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
1.00ct Cushion
HK$1,473 HKD