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Round|Lab Grown|IGI

1.65ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG12255703

Shape and cutting style on the report: Round brilliant

Certificate IGI LG12255703

Diamond specifications and retailer prices

From HK$2,817 HKD
$359 USD
As of November 1, 2026
Save HK$12,260 HKD (81%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$25,029 HKD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.65ct lab-grown round diamond

This 1.65ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG12255703 or 12255703. Listed at 20 retailers as of November 1, 2026, with a 435% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.65
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12255703
Dimensions7.59 × 7.63 × 4.65 mm
L/W Ratio1.01
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment. Type IIa
Top View
7.59 mm7.63 mm1.65 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12255703
Side View
Table 59.0%Crown 35.5°Girdle: MED-UNDPavilion 40.9°Culet: NoneDepth 61.1%

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: Nov 1
Current: HK$25,029 HKD|Low: HK$2,817 HKD|High: HK$25,029 HKD|Avg: HK$7,968 HKD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 3, 2026
Retailer 20HK$2,817 HKD
Retailer 18HK$3,272 HKD
Retailer 16HK$3,492 HKD
Retailer 3HK$3,499 HKD
Retailer 5HK$3,499 HKD
Retailer 17HK$3,499 HKD
Retailer 7HK$4,668 HKD
Retailer 8HK$5,610 HKD
Retailer 19HK$6,120 HKD
Retailer 10HK$6,209 HKD
Retailer 2HK$6,315 HKD
Retailer 12HK$6,821 HKD
Retailer 13HK$6,872 HKD
Retailer 14HK$7,375 HKD
Retailer 6HK$10,255 HKD
Retailer 9HK$10,875 HKD
Retailer 4HK$12,405 HKD
Retailer 11HK$13,606 HKD
Retailer 15HK$15,076 HKD
Do Amore DiamondsHK$25,029 HKD

18 data points across 20 retailers

20 retailersHK$2,817 HKD to HK$15,076 HKD

A
Cheapest Retailer
-
HK$2,817 HKD
$359 USD
A
Retailer 2
-
HK$3,272 HKD
$417 USD
View
B+
Retailer 3
-
HK$3,492 HKD
$445 USD
View
Retailer 4
-
HK$3,499 HKD
$446 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
HK$3,499 HKD
$446 USD
View
A
Retailer 6
-
HK$3,499 HKD
$446 USD
View
B+
Retailer 7
-
HK$4,668 HKD
$595 USD
View
Retailer 8
-
HK$5,610 HKD
$715 USD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
HK$6,120 HKD
$780 USD
View
Retailer 10
-
HK$6,209 HKD
$791 USD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
HK$6,315 HKD
£634 GBP
View
B+
Retailer 12
-
HK$6,821 HKD
$869 USD
View
B+
Retailer 13
-
HK$6,872 HKD
£690 GBP
View
B+
Retailer 14
-
HK$7,375 HKD
$940 USD
View
B
Retailer 15
-
HK$10,255 HKD
$1,307 USD
View
B
Retailer 16
-
HK$10,875 HKD
$1,386 USD
View
B
Retailer 17
-
HK$12,405 HKD
$1,581 USD
View
B
Retailer 18
-
HK$13,606 HKD
$1,734 USD
View
B
Retailer 19
-
HK$15,076 HKD
£1,513 GBP
View
Most Expensive
Do Amore Diamonds
27-7EBE39188 · Nov 2
HK$25,029 HKD
$3,190 USD
View
Price under review
19 more retailers have this diamond
Prices start from HK$2,817 HKDSave up to HK$12,260 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
1.65ct Round
HK$2,817 HKD