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Radiant|Lab Grown|IGI

1.70ct D IF Radiant Lab Grown Diamond

GD • D/IF • IGI LG729529458

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG729529458

Diamond specifications and retailer prices

From HK$6,528 HKD
$832 USD
As of October 30, 2026
Save HK$25,012 HKD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$31,540 HKD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.7ct lab-grown radiant diamond

This 1.7ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG729529458 or 729529458. Listed at 11 retailers as of October 30, 2026, with prices from HK$6,528 to HK$31,540, a HK$25,012 spread on the same certified stone. Brilliant Earth lists it at HK$31,540. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
D
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.2°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729529458
Dimensions8.44 × 5.89 × 3.88 mm
L/W Ratio1.43
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
8.44 mm5.89 mm1.70 ctD / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729529458
Side View
Table 67.0%Crown 46.2°Girdle: MediumPavilion 34.7°Culet: NoneDepth 65.9%

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$31,540 HKD|Low: HK$6,355 HKD|High: HK$35,227 HKD|Avg: HK$15,462 HKD|-10.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 8HK$6,528 HKD
Retailer 10HK$6,669 HKD
Retailer 2HK$7,101 HKD
Retailer 5HK$8,098 HKD
Retailer 11HK$10,325 HKD
Retailer 4HK$15,539 HKD
Retailer 3HK$15,848 HKD
Retailer 6HK$20,426 HKD
Retailer 9HK$21,262 HKD
Retailer 7HK$24,753 HKD
Brilliant EarthHK$31,540 HKD

42 data points across 11 retailers

11 retailersHK$6,528 HKD to HK$31,540 HKD

A
Cheapest Retailer
-
HK$6,528 HKD
$832 USD
A
Retailer 2
-
HK$6,669 HKD
$850 USD
View
A
Retailer 3
-
HK$7,101 HKD
€862 EUR
View
B+
Retailer 4
-
HK$8,098 HKD
£813 GBP
View
B+
Retailer 5
-
HK$10,325 HKD
$1,316 USD
View
B
Retailer 6
-
HK$15,539 HKD
A$3,047 AUD
View
B
Retailer 7
-
HK$15,848 HKD
$2,020 USD
View
B
Retailer 8
-
HK$20,426 HKD
£2,050 GBP
View
B
Retailer 9
-
HK$21,262 HKD
$2,710 USD
View
Retailer 10
-
HK$24,753 HKD
$3,155 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
16081761A · Oct 30
HK$31,540 HKD
$4,020 USD
View
10 more retailers have this diamond
Prices start from HK$6,528 HKDSave up to HK$25,012 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 Radiant
HK$6,528 HKD