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Oval|Lab Grown|IGI

1.83ct D SI1 Oval Lab Grown Diamond

GD • D/SI1 • IGI LG512222817

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG512222817

Diamond specifications and retailer prices

From $596 AUD
$419 USD
As of October 30, 2026
Save $1,283 AUD (68%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,012 AUD at Rare Carat · As of September 6, 2026
View at Rare Carat

About this 1.83ct lab-grown oval diamond

This 1.83ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG512222817 or 512222817. Listed at 13 retailers as of October 28, 2026, with a 215% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.83
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle42.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512222817
Dimensions9.77 × 6.98 × 4.39 mm
L/W Ratio1.40
Girdle conditionFaceted
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
9.77 mm6.98 mm1.83 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512222817
Side View
Table 59.5%Crown 32.4°Girdle: MED-STKPavilion 42.3°Culet: NoneDepth 62.9%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $1,879 AUD|Low: $342 AUD|High: $2,012 AUD|Avg: $1,044 AUD|-6.6%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 6$342 AUD
Retailer 5$596 AUD
Retailer 2$624 AUD
Retailer 7$971 AUD
Retailer 4$1,103 AUD
Retailer 8$1,176 AUD
Retailer 9$1,184 AUD
Retailer 3$1,607 AUD
Rare Carat$1,879 AUD

40 data points across 9 retailers

13 retailers$596 AUD to $1,879 AUD

Retailer 1
-
$265 AUD
$186 USD
Price last confirmed 29 days ago
Retailer 2
-
$320 AUD
$225 USD
View
Price last confirmed 35 days ago
Retailer 3
-
$342 AUD
$240 USD
View
Price last confirmed 28 days ago
B
Retailer 4
-
$596 AUD
$419 USD
View
B+
Retailer 5
-
$624 AUD
£345 GBP
View
B+
Retailer 6
-
$971 AUD
$682 USD
View
Retailer 7
-
$1,100 AUD
$773 USD
View
Price last confirmed 30 days ago
B
Retailer 8
-
$1,103 AUD
$775 USD
View
B
Retailer 9
-
$1,176 AUD
$826 USD
View
B
Retailer 10
-
$1,184 AUD
HK$6,500 HKD
View
B
Retailer 11
-
$1,607 AUD
£889 GBP
View
B
Retailer 12
-
$1,879 AUD
$1,320 USD
View
Most Expensive
Rare Carat
KD0770 · Sep 6
$2,012 AUD
$1,414 USD
View
Price last confirmed 54 days ago
12 more retailers have this diamond
Prices start from $596 AUDSave up to $1,283 AUD

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+
1.83ct Oval
$596 AUD