Oval|Lab Grown|GIA

3.12ct D SI1 Oval Lab Grown Diamond

EX • D/SI1

Diamond specifications and retailer prices

From $2,291 NZD
$1,291 USD
As of October 29, 2026
Save $3,921 NZD (63%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,211 NZD 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 $2,291 to $6,211, a $3,921 spread on the same certified stone. Diamond Exchange Canada lists it at $6,211. 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: $6,211 NZD|Low: $2,291 NZD|High: $6,211 NZD|Avg: $3,852 NZD
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 5$2,291 NZD
Retailer 4$2,493 NZD
Retailer 2$2,658 NZD
Retailer 6$2,658 NZD
Retailer 7$4,010 NZD
Retailer 3$5,499 NZD
Diamond Exchange Canada$6,211 NZD

8 data points across 7 retailers

10 retailers$2,291 NZD to $6,211 NZD

Retailer 1
-
$2,291 NZD
$1,291 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
$2,291 NZD
$1,291 USD
View
B+
Retailer 3
-
$2,493 NZD
$1,405 USD
View
Retailer 4
-
$2,493 NZD
$1,405 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$2,658 NZD
$1,498 USD
View
B+
Retailer 6
-
$2,658 NZD
$1,498 USD
View
Retailer 7
-
$2,658 NZD
$1,498 USD
View
Price last confirmed 19 days ago
B
Retailer 8
-
$5,499 NZD
$3,099 USD
View
B
Retailer 9
-
$5,499 NZD
$3,099 USD
View
Most Expensive
B
Diamond Exchange Canada
1986514856 · Oct 30
$6,211 NZD
CA$4,862 CAD
View
9 more retailers have this diamond
Prices start from $2,291 NZDSave up to $3,921 NZD

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
$2,291 NZD