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Round|Lab Grown|GIA

1.78ct D SI2 Round Lab Grown Diamond

EX • D/SI2 • GIA 2457007520

Certificate GIA 2457007520

Diamond specifications and retailer prices

From HK$3,225 HKD
$411 USD
As of October 29, 2026
Save HK$12,490 HKD (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$15,715 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 1.78ct lab-grown round diamond

This 1.78ct 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 2457007520. Listed at 15 retailers as of October 29, 2026, with prices from HK$3,225 to HK$15,715, a HK$12,490 spread on the same certified stone. MOH London lists it at HK$15,715. 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

1.78
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginLab Grown
Grading LabGIA
CertificateGIA 2457007520
Dimensions7.80 × 7.78 × 4.80 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
7.80 mm7.78 mm1.78 ctD / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2457007520
Side View
Table 56.0%Crown 35°Girdle: NUL-NULPavilion 40.6°Culet: NoneDepth 61.6%

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: Oct 29
Current: HK$15,715 HKD|Low: HK$3,099 HKD|High: HK$15,814 HKD|Avg: HK$6,934 HKD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 9HK$3,225 HKD
Retailer 13HK$3,609 HKD
Retailer 5HK$4,002 HKD
Retailer 11HK$4,002 HKD
Retailer 4HK$5,414 HKD
Retailer 2HK$5,962 HKD
Retailer 12HK$5,979 HKD
Retailer 6HK$6,451 HKD
Retailer 8HK$7,062 HKD
Retailer 10HK$9,494 HKD
Retailer 7HK$9,714 HKD
Retailer 3HK$12,860 HKD
MOH LondonHK$15,715 HKD

44 data points across 13 retailers

15 retailersHK$3,225 HKD to HK$15,715 HKD

A
Cheapest Retailer
-
HK$3,225 HKD
$411 USD
A
Retailer 2
-
HK$3,609 HKD
$460 USD
View
A
Retailer 3
-
HK$4,002 HKD
$510 USD
View
A
Retailer 4
-
HK$4,002 HKD
$510 USD
View
A
Retailer 5
-
HK$4,419 HKD
View
B+
Retailer 6
-
HK$5,414 HKD
$690 USD
View
B+
Retailer 7
-
HK$5,962 HKD
£598 GBP
View
B+
Retailer 8
-
HK$5,979 HKD
$762 USD
View
B+
Retailer 9
-
HK$6,451 HKD
€783 EUR
View
B+
Retailer 10
-
HK$7,062 HKD
$900 USD
View
B+
Retailer 11
-
HK$7,438 HKD
$948 USD
View
B
Retailer 12
-
HK$9,494 HKD
$1,210 USD
View
B
Retailer 13
-
HK$9,714 HKD
$1,238 USD
View
B
Retailer 14
-
HK$12,860 HKD
$1,639 USD
View
Most Expensive
B
MOH London
2457007520 · Oct 29
HK$15,715 HKD
£1,577 GBP
View
14 more retailers have this diamond
Prices start from HK$3,225 HKDSave up to HK$12,490 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
1.78ct Round
HK$3,225 HKD