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Oval|Lab Grown|GIA

3.12ct D SI1 Oval Lab Grown Diamond

EX • D/SI1

Diamond specifications and retailer prices

From $1,650 SGD
$1,291 USD
As of October 29, 2026
Save $2,825 SGD (63%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,475 SGD at Diamond Exchange Canada · As of October 30, 2026
View at Diamond Exchange Canada

About this 3.12ct lab-grown oval diamond

This 3.12ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 10 retailers as of October 29, 2026, with prices from $1,650 to $4,475, a $2,825 spread on the same certified stone. Diamond Exchange Canada lists it at $4,475. 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

3.12
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions11.66 × 8.29 × 5.12 mm
L/W Ratio1.41
Top View
11.66 mm8.29 mm3.12 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 60.0%CrownGirdle: MediumPavilionCulet: NoneDepth 61.7%

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 29
Current: $4,475 SGD|Low: $1,650 SGD|High: $4,475 SGD|Avg: $2,775 SGD
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 5$1,650 SGD
Retailer 4$1,796 SGD
Retailer 2$1,915 SGD
Retailer 6$1,915 SGD
Retailer 7$2,889 SGD
Retailer 3$3,962 SGD
Diamond Exchange Canada$4,475 SGD

8 data points across 7 retailers

10 retailers$1,650 SGD to $4,475 SGD

Retailer 1
-
$1,650 SGD
$1,291 USD
Price last confirmed 7 days ago
B+
Retailer 2
-
$1,650 SGD
$1,291 USD
View
B+
Retailer 3
-
$1,796 SGD
$1,405 USD
View
B+
Retailer 4
-
$1,796 SGD
$1,405 USD
View
B+
Retailer 5
-
$1,915 SGD
$1,498 USD
View
B+
Retailer 6
-
$1,915 SGD
$1,498 USD
View
Retailer 7
-
$1,915 SGD
$1,498 USD
View
Price last confirmed 18 days ago
B
Retailer 8
-
$3,962 SGD
$3,099 USD
View
B
Retailer 9
-
$3,962 SGD
$3,099 USD
View
Most Expensive
B
Diamond Exchange Canada
1986514856 · Oct 30
$4,475 SGD
CA$4,862 CAD
View
9 more retailers have this diamond
Prices start from $1,650 SGDSave up to $2,825 SGD

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+
3.12ct Oval
$1,650 SGD