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1.51ct D SI2 Round Natural Diamond

VG • D/SI2 • GIA 6312930159

Shape and cutting style on the report: Round brilliant

Certificate GIA 6312930159

Diamond specifications and retailer prices

From HK$63,197 HKD
$8,055 USD
As of October 25, 2026
Save HK$72,141 HKD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$135,338 HKD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 6312930159. Listed at 15 retailers as of October 25, 2026, with prices from HK$63,197 to HK$135,338, a HK$72,141 spread on the same certified stone. Diamond Quarter lists it at HK$135,338. 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

1.51
Carat
D
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6312930159
Dimensions7.25 × 7.13 × 4.54 mm
L/W Ratio1.02
Star length50%
Lower girdle80%
Top View
7.25 mm7.13 mm1.51 ctD / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6312930159
Side View
Table 58.0%Crown 37.5°Girdle: STK-THKPavilion 40.6°Culet: NoneDepth 63.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: HK$88,657 HKD|Low: HK$62,413 HKD|High: HK$88,657 HKD|Avg: HK$75,870 HKD|+4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 9HK$62,413 HKD
Retailer 5HK$63,197 HKD
Retailer 7HK$65,747 HKD
Retailer 3HK$72,799 HKD
Retailer 8HK$74,479 HKD
Retailer 6HK$76,108 HKD
Retailer 4HK$77,903 HKD
Retailer 2HK$83,557 HKD
Retailer 11HK$83,557 HKD
Retailer 10HK$86,381 HKD
Retailer 1HK$88,657 HKD

39 data points across 11 retailers

15 retailersHK$63,197 HKD to HK$135,338 HKD

B+
Cheapest Retailer
-
HK$63,197 HKD
$8,055 USD
B+
Retailer 2
-
HK$65,747 HKD
$8,380 USD
View
B+
Retailer 3
-
HK$67,034 HKD
$8,544 USD
View
B+
Retailer 4
-
HK$67,426 HKD
$8,594 USD
View
B+
Retailer 5
-
HK$71,224 HKD
CA$12,608 CAD
View
B+
Retailer 6
-
HK$72,799 HKD
$9,279 USD
View
B+
Retailer 7
-
HK$74,479 HKD
$9,493 USD
View
B+
Retailer 8
-
HK$76,108 HKD
SGD 13,109 SGD
View
B+
Retailer 9
-
HK$77,903 HKD
£7,818 GBP
View
B
Retailer 10
-
HK$83,557 HKD
$10,650 USD
View
B
Retailer 11
-
HK$83,557 HKD
$10,650 USD
View
B
Retailer 12
-
HK$85,377 HKD
$10,882 USD
View
B
Retailer 13
-
HK$86,381 HKD
$11,010 USD
View
B
Retailer 14
-
HK$88,657 HKD
€10,762 EUR
View
Most Expensive
B
Diamond Quarter
1.51SI2D6359E8AAN · Oct 29
HK$135,338 HKD
£13,583 GBP
View
14 more retailers have this diamond
Prices start from HK$63,197 HKDSave up to HK$72,141 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.

B+
1.51ct Round
HK$63,197 HKD